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<br />From the inlet structure on Brush Creek, water is piped to one <br /> <br />earthen holding pond and a concrete settling pond. It is recommended <br /> <br />that the earthen holding pond have a dike constructed down the middle <br /> <br />of the pond to provide two earthen holding ponds. The water would <br /> <br />then be taken out,of the first earthen holding pond, piped to the <br /> <br />concrete settling pond, and by meanS of a rough filter and baffles, <br /> <br />the concrete settling pond would produce a much clearer water to <br /> <br />. <br /> <br />send to the filtering plant. The rough filter would have to be pro- <br /> <br />vided with a backwash system. The water from the backwash system <br /> <br />would be extremely turbid and should not be put back into Brush Creek <br /> <br />immediately. Instead, it should be dumped back into the second earthen <br /> <br />holding pond created by the dike constructed down the middle of the <br /> <br />existing earthen holding pond. The turbidity in the backwash water <br /> <br />v <br /> <br />would then settle out into thie pond before entering Brush Creek. A <br /> <br />c <br /> <br />schematic of how this could be accomplished is shown on Exhibit E at <br /> <br />the end of this report. <br /> <br />There are several alternates to cleaning up the raw water which <br /> <br />enters the treatment plant and these will be mentioned for informational <br /> <br />purposes only. <br /> <br />One alternate for removing the turbidity from the Brush Creek water <br /> <br />. <br /> <br />would be to construct? holding pond that would retain the water from a <br /> <br />thirty to sixty day period. A pond of this size, based on a projected <br /> <br />1991 water consumption, would be a pond 10 feet deep extending over <br /> <br />13 square acres. This alternate would involve considerable expense in <br />'"- ...... <br /> <br />land acquisition, earth moving, and piping. This alternate would not <br /> <br />be economically feasible. <br /> <br />Another alternate for obtaining less turbid water for the treat- <br /> <br />ment plant would be to take water out of East Brush Creek, which enters <br /> <br />Brush Creek about one and three-quarters of a mile above the present <br /> <br />- 47 - <br />